Support rich line output in both speech and braille

chrome/browser/resources/chromeos/chromevox/braille/expanding_braille_translator.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Translates text to braille, optionally with some parts
  * uncontracted.
  */
 
 goog.provide('cvox.ExpandingBrailleTranslator');
@@ skipping 78 matching lines @@
 cvox.ExpandingBrailleTranslator.prototype.translate = function(
     text, expansionType, callback) {
   var expandRanges = this.findExpandRanges_(text, expansionType);
   var extraCellsSpans =
       text.getSpansInstanceOf(cvox.ExtraCellsSpan).filter(function(span) {
         return span.cells.byteLength > 0;
       });
   var extraCellsPositions = extraCellsSpans.map(function(span) {
     return text.getSpanStart(span);
   });
+  var formTypeMap = new Array(text.length).fill(0);
+  text.getSpansInstanceOf(cvox.BrailleTextStyleSpan).forEach(function(span) {
+    var start = text.getSpanStart(span);
+    var end = text.getSpanEnd(span);
+    for (var i = start; i < end; i++)
+      formTypeMap[i] |= span.formType;
+  });
+
   if (expandRanges.length == 0 && extraCellsSpans.length == 0) {
     this.defaultTranslator_.translate(
-        text.toString(),
+        text.toString(), formTypeMap,
         cvox.ExpandingBrailleTranslator.nullParamsToEmptyAdapter_(
             text.length, callback));
     return;
   }
 
   var chunks = [];
   function maybeAddChunkToTranslate(translator, start, end) {
     if (start < end)
       chunks.push({translator: translator, start: start, end: end});
   }
@@ skipping 61 matching lines @@
       appendAdjusted(brailleToText, chunk.brailleToText, chunk.start);
       cellPos += chunk.cells.byteLength;
     }
     callback(cells.buffer, textToBraille, brailleToText);
   }
 
   if (chunksToTranslate.length > 0) {
     chunksToTranslate.forEach(function(chunk) {
       chunk.translator.translate(
           text.toString().substring(chunk.start, chunk.end),
+          formTypeMap.slice(chunk.start, chunk.end),
           cvox.ExpandingBrailleTranslator.nullParamsToEmptyAdapter_(
               chunk.end - chunk.start, goog.partial(chunkTranslated, chunk)));
     });
   } else {
     finish();
   }
 };
 
 
 /**
@@ skipping 141 matching lines @@
   };
 };
 
 
 /**
  * A character range with inclusive start and exclusive end positions.
  * @typedef {{start: number, end: number}}
  * @private
  */
 cvox.ExpandingBrailleTranslator.Range_;